INFLUENCE OF MAGNETIC FIELD-DEPENDENT VISCOSITY ON MHD MIXED MAGNETISED FLUID OVER A MOVING SHEET

Abstract

Nanotechnology encourages the biocompatibility of hybrid ferrofluids (HFFs). The present research investigates the flow of a HFF composed of ferrite (FE3O4) and cobalt ferrite (COFE2O4) dissolved in a mixture of ethylene glycol with water (EG/H2O) solution past a moving sheet. The mixed convection is considered. The presence of the magnetohydrodynamics (MHD) effect controls the flow of the HFF, leading to the development of the magnetic field-dependent viscosity (MFDV). The problem is governed by partial differential equations (PDEs), which are then reduced to ordinary differential equations (ODEs) using similarity variables. The bvp4c package in MATLAB is employed to solve the resulting ODEs. The findings show that enhancing the MFDV results in higher velocity and temperature patterns, while reducing the shear stress and heat transfer rate by 21.17% and 6.88%, respectively. The temperature of the HFF decreases due to variations in the mixed convection parameter. The outcomes of the present study can serve as a useful guideline for developing ferrite-based nanoparticles for biomedical applications.